Institut de Recerca en Sistemes Complexos (UBICS): Enviaments recents
Ara mostrant els elements 61-80 de 118
A complex network framework to model cognition: unveiling correlation structures from connectivity
Several approaches to cognition and intelligence research rely on statistics-based model testing, namely, factor analysis. In the present work, we exploit the emerging dynamical system perspective putting the focus on the ...
Detecting the significant flux backbone of Escherichia coli metabolism
The heterogeneity of computationally predicted reaction fluxes in metabolic networks within a single flux state can be exploited to detect their significant flux backbone. Here, we disclose the backbone of Escherichia coli, ...
Jump-diffusion models for valuing the future: Discounting under extreme situations
We develop the process of discounting when underlying rates follow a jump-diffusion process, that is, when, in addition to diffusive behavior, rates suffer a series of finite discontinuities located at random Poissonian ...
Soft Communities in Similarity Space
The S1 model has been central in the development of the field of network geometry. It places nodes in a similarity space and connects them with a likelihood depending on an effective distance which combines similarity and ...
Bistability, Oscillations, and Bidirectional Motion of Ensemble of Hydrodynamically Coupled Molecular Motors
We analyze the collective behavior of hydrodynamically coupled molecular motors. We show that the local fluxes induced by motor displacement can induce the experimentally observed bidirectional motion of cargoes and vesicles. ...
Inferring structure of cortical neuronal networks from activity data: A statistical physics approach
Understanding the relation between cortical neuronal network structure and neuronal activity is a fundamental unresolved question in neuroscience, with implications to our understanding of the mechanism by which neuronal ...
Noise-induced polarization switching in complex networks
The combination of bistability and noise is ubiquitous in complex systems, from biology to social interactions, and has important implications for their functioning and resilience. Here we use a simple three-state dynamical ...
Dynamical and topological conditions triggering the spontaneous activation of Izhikevich neuronal networks
Understanding the dynamic behavior of neuronal networks in silico is crucial for tackling the analysis of their biological counterparts and making accurate predictions. Of particular importance is determining the structural ...
Quasi-symmetries in complex networks: a dynamical model approach
The existence of symmetries in complex networks has a significant effect on network dynamic behaviour. Nevertheless, beyond topological symmetry, one should consider the fact that real-world networks are exposed to ...
Public libraries embrace citizen science: Strengths and challenges
Can public libraries become hubs for citizen science? In line with the principles of citizen science, this question was answered collaboratively with librarians from the Barcelona Network of Public Libraries who performed ...
Preparation and Mechano-Functional Characterization of PEGylated Fibrin Hydrogels: Impact of Thrombin Concentration
Three-dimensional (3D) neuronal cultures grown in hydrogels are promising platforms to design brain-like neuronal networks in vitro. However, the optimal properties of such cultures must be tuned to ensure a hydrogel matrix ...
Hydrodynamic and geometric effects in the sedimentation of model run-and-tumble microswimmers
The sedimentation process in an active suspension is the result of the competition between gravity and the autonomous motion of particles. We carry out simulations of run-and-tumble squirmers that move in a fluid medium, ...
Maximizing friction by liquid flow clogging in confinement
In the nanoscale regime, flow behaviors for liquids show qualitative deviations from bulk expectations. In this work, we reveal by molecular dynamics simulations that plug flow down to nanoscale induces molecular friction ...
Linear response theory and Green-Kubo relations for active matter
We address the question of how interacting active systems in a nonequilibrium steady state respond to an external perturbation. We establish an extended fluctuation-dissipation theorem for active Brownian particles (ABP), ...
Human pluripotent stem cell-derived neurons are functionally mature in vitro and integrate into the mouse striatum following transplantation
Human Pluripotent Stem Cells (hPSCs) are a powerful tool for modelling human development. In recent years, hPSCSs have become central in cell-based therapies for neurodegenerative diseases given their potential to replace ...
Multicaloric effects and magnetostructural coupling in the Cr2Ge2Te6 van der Waals crystal
Materials with significant coupling between magnetism and their crystal structure are prone to exhibit multicaloric effects, which offer a novel approach to addressing the bottlenecks of ecologic solid-state refrigeration ...
Influence of topology in the mobility enhancement of pulse-coupled oscillator synchronization
In this work we revisit the nonmonotonic behavior (NMB) of synchronization time with velocity reported for systems of mobile pulse-coupled oscillators (PCOs). We devise a control parameter that allows us to predict in which ...
Novel mechanism for oscillations in catchbonded motor-filament complexes
Generation of mechanical oscillations is ubiquitous to a wide variety of intracellular processes, ranging from activity of muscle fibers to oscillations of the mitotic spindle. The activity of motors plays a vital role in ...
Magnetically driven confined colloids: From enhanced diffusion to bidirectional transport
Inspired by previous experimental results, we use numerical simulations to investigate the collective dynamics of paramagnetic colloidal particles confined between two plates closer than twice the particle diameter and ...
Three-State Opinion Model on Complex Topologies
We investigate opinion diffusion on complex networks and the interplay between the existence of neutral opinion states and non-trivial network structures. For this purpose, we apply a three-state opinion model based on ...
